9 Oct 2026 -- I made a few minor improvements in the H8 Mini. The rev.B. PCB is exactly the same mechanically, but has a couple added features.

I added a logic probe option. MON is now a red/green LED. When the TEST jumper is in place, it is controlled by software. When the TEST jumper is removed, it can be used as a simple high/low/open indicator to aid in testing and debugging.

The 7-seg LEDs were rather bright, so I added series resistors to limit brightness (and extend battery life).

And, I added a pull-down resistor to the 80C85 INT pin so it can be used by external expansions.